Trail Ridge (U.S. 34): This road through Rocky Mountain National Park is the highest continuous auto road in the country. Itâs truly an all-American icon â the road itself is listed on the National Register of Historic Places.
Lumber Dimensions. 2x4s are not actually 2 inches by 4 inches. When the board is first rough sawn from the log, it is a true 2x4, but the drying process and planing of the board reduce it to the finished 1.5x3.5 size. Here are the common sizes of lumber, and their actual sizes.
For example, dimensional lumber sizes such as 2 by 4 refers to a board whose finished dimensions are closer to 1 1â2 inches by 3 1â2 inches. A  3 1â2 -inch floppy disk 's standard dimension is 90 mm, or 3.54 inches, and is advertised to hold 1.44 megabytes although its capacity is 1,474,560 bytes.A  3â4 -inch pipe in the Nominal Pipe Size system has no dimensions that are exactly 0.75 inches.A screw thread has a number of dimensions required to assure proper function but is referred to by a nominal size and a thread design family, for example  1â4 inch, 20 threads per inch, Unified National Coarse.or example, dimensional lumber sizes such as 2 by 4 refers to a board whose finished dimensions are closer to 1 1â2 inches by 3 1â2 inches. A  3 1â2 -inch floppy disk 's standard dimension is 90 mm, or 3.54 inches, and is advertised to hold 1.44 megabytes although its capacity is 1,474,560 bytes.